IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Hydra
The Hydra
OriginAncient
AbbreviationHya
GenitiveHydrae
Pronunciation/ˈhaɪdrə/ genitive /ˈhaɪdriː/
HIGH-druh
LocationCelestial Equator
Primary StarAlphard (α Hya)
Right Ascention 9h 28m Declination -8° 40'
Martian Solar Lag δ(🜨→♂) +0.272 h (16.3 min)
Hydra represents the Lernaean Hydra, a reptilian monster so vile that even its breath and blood were highly poisonous. It had nine serpent heads, eight mortal and one immortal. Every time one was cut off two would grow in its place. Defeating the Lernaean Hydra was the second labor assigned to Hercules by King Eurystheus. In the marshes of Lerna, Hercules drew out the Hydra from its lair, and with his mighty club, bashed one of its heads in. In its place, two heads sprouted, just as mean and deadly as the original. He realized he would need to take a different approach. He had his nephew Iolaus quickly cauterize each stump after it was bashed in. This prevented the heads from growing back. Hercules did this with each of the mortal heads. He struck off the immortal head and buried it deep in the ground and placed a huge rock on top of it. With his second labor complete, he dipped the tips of his arrows into the blood of the Hydra, covering them with deadly poison. In a second myth involving Hydra, this constellation represents the snake that Corvus used in a lie to Apollo.
www.underthesky.com
Hydra as depicted by Johann Bayer in his Uranometria (1603). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
←Hydra -718→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -718 2 Hydra -718 3 Hydra -718 4 Hydra -718 5 Hydra -718 6 Hydra -718 7 Hydra -718 8 Hydra -718 9 Hydra -718 10 Hydra -718 11 Hydra -718 12 Hydra -718 13 Hydra -718 14 Hydra -718 15 Hydra -718 16 Hydra -718 17 Hydra -718 18 Hydra -718 19 Hydra -718 20 Hydra -718 21 Hydra -718 22 Hydra -718 23 Hydra -718 24 Hydra -718 25 Hydra -718 26 Hydra -718 27 Hydra -718 28 Hydra -718 2 Centaurus -717 10 April 0260 11 April 0260 12 April 0260 13 April 0260 14 April 0260 15 April 0260 16 April 0260 17 April 0260 18 April 0260 19 April 0260 20 April 0260 21 April 0260 22 April 0260 23 April 0260 24 April 0260 25 April 0260 26 April 0260 27 April 0260 28 April 0260 29 April 0260 30 April 0260 1 May 0260 2 May 0260 3 May 0260 4 May 0260 5 May 0260 6 May 0260 7 May 0260 8 May 0260
MS -627407 MS -627408 MS -627409 MS -627410 MS -627411 MS -627412 MS -627413 MS -627414 MS -627415 MS -627416 MS -627417 MS -627418 MS -627419 MS -627420 MS -627421 MS -627422 MS -627423 MS -627424 MS -627425 MS -627426 MS -627427 MS -627428 MS -627429 MS -627430 MS -627431 MS -627432 MS -627433 MS -627434 MS -627380 MD -644845 MD -644844 MD -644843 MD -644842 MD -644841 MD -644840 MD -644839 MD -644838 MD -644837 MD -644836 MD -644835 MD -644834 MD -644833 MD -644832 MD -644831 MD -644830 MD -644829 MD -644828 MD -644827 MD -644826 MD -644825 MD -644824 MD -644823 MD -644822 MD -644821 MD -644820 MD -644819 MD -644818 MD -644817